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DEVICE FOR TEACHING PLAYING THE PIANO OR THE LIKE
DEVICE FOR TEACHING PLAYING THE PIANO OR THE LIKE
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机译:弹奏钢琴或类似钢琴的教学设备
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摘要
FIELD: teaching music. SUBSTANCE: device is characterized in that white and black keys are coupled with the aid of light guides adapted for illuminating them. EFFECT: widened teaching capabilities. 3 cl, 4 dwg
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